Update PDF names in Windows Explorer

I have some PDF drawings i need to rename Problem is some of the pdf names include the "&" symbol. This is a reserved word in ESRI and the attachments are not working.

I would just like to Delete that from the name all together.
So Plan&Profile becomes PlanProfile or Plan_Profile
I can replace with and "_" as well. Either way is good with me.

I have not done any programming like this. I'm thinking it would be a process to select all the names in the folder check to see if "&" in the name then delete or replace that piece of TExt. then move on to the next one.

You've had several good suggestions on how to do this and I'm not going to add more ways. But I do want to comment on the post that says, "You can't have the character '&' in filenames." That is incorrect! The ampersand is a valid character for file names. For the record, the following characters are not allowed in Windows file names:

@Joe:
That's the problem to work more with Command Prompt than Windows GUI.
The only way you can create a file with '&' in the name using Command Prompt is to put the names inside quotes. For example: "ABC&D.txt". Using Windows GUI or a Save File As... option I've realized that you can use the '&' without any problem.